21193014 Pulley | Genuine Volvo Penta Part

🔧 Product Description

Genuine crankshaft pulley for Volvo Penta D2-40 marine diesel engines. Part number 21193014 replaces earlier pulley 3812451 and drives the engine accessory belt.

🚤 Compatibility

Typically suits:

• Volvo Penta D2-40
• Volvo Penta D2-40B
• Volvo Penta D2-40F

• Engine Family: D
• HP Range: 40 HP

⚙️ Key Features

• Confirmed D2-40A, D2-40B and D2-40F application
• Current replacement for pulley 3812451
• Factory belt-groove and hub geometry
• Drives alternator and cooling accessories
• Requires correct crankshaft fastening torque

🔌 Function

The pulley transfers crankshaft rotation to the engine accessory belt.

⚠️ Common Signs of Failure

• Cracked or damaged grooves
• Repeated belt misalignment
• Fretting at the crankshaft joint
• Loose retaining fastener

🛠️ Service Notes

• Inspect the belt running surfaces before fitting — a pulley with glazed, scored, pitted or rust-roughened grooves will chew through a new belt in very little running time
• Check that the pulley runs true and that its bearing or bush turns smoothly with no roughness or side play; fit a new belt whenever a pulley is changed
• Confirm that every pulley in the drive lies in the same plane and that the belt profile matches each groove — misalignment shows up as belt dust, squeal or a worn belt edge and will destroy a new belt quickly
• Fit onto a clean, dry, burr-free shaft or hub face and tighten the retaining fasteners in the sequence and to the figures given in the workshop manual for your engine
• Turn the engine over by hand before starting to confirm the belt is fully seated in every groove and that nothing fouls, then recheck belt tension after the first running period

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21193014 → Supersedes 3812451

OEM / Related Numbers

• 3812451 earlier number superseded by this part

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging